Cant update GRUB

Support
1

Hi everyone, I want to change timeout in grub (I have dualboot) so I change the file /etc/default/grub and than sudo update-grub but it change nothing and I get next output:

Generating grub configuration file ... 
Found theme: /usr/share/grub/themes/manjaro/theme.txt 
Found linux image: /boot/vmlinuz-6.12-x86_64 
Found initrd image: /boot/intel-ucode.img /boot/amd-ucode.img /boot/initramfs-6.12-x86_64.img 
Found initrd fallback image: /boot/initramfs-6.12-x86_64-fallback.img 
Warning: os-prober will be executed to detect other bootable partitions. 
Its output will be used to detect bootable binaries on them and create new boot entries. 
Found Windows Boot Manager on /dev/nvme0n1p1@/efi/Microsoft/Boot/bootmgfw.efi 
Adding boot menu entry for UEFI Firmware Settings ... 
Root filesystem isn't btrfs 
If you think an error has occurred, please file a bug report at "https://github.com/Antynea/grub-btrfs" 
Found memtest86+ image: /boot/memtest86+/memtest.bin 
/usr/bin/grub-probe: warning: unknown device type nvme0n1. 
Found memtest86+ EFI image: /boot/memtest86+/memtest.efi 
/usr/bin/grub-probe: warning: unknown device type nvme0n1. 
done

What I am doing wrong?

P.S. Manjaro KDE, file system EXT4 for root and Home. do u alboot

:wink:

2

Hi @pp2222, and welcome!

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3

What did you set it to?
grep TIME /etc/default/grub

As far as I know, you can’t set it to 0 when you have a dual boot setup.

1 Like
4

I set 2 seconds (was 5)

5

This is normal output. Except that you have only one kernel and you have not tended your pacnews, it is not show stopper.

Post the whole grub config file, the timer is usually changed together with some other values.

6 
# GRUB boot loader configuration

GRUB_DEFAULT=saved
GRUB_TIMEOUT=2
GRUB_DISTRIBUTOR='Manjaro'
GRUB_CMDLINE_LINUX_DEFAULT='quiet splash udev.log_priority=3'
GRUB_CMDLINE_LINUX=""

# Preload both GPT and MBR modules so that they are not missed
GRUB_PRELOAD_MODULES="part_gpt part_msdos"

# Uncomment to enable booting from LUKS encrypted devices
#GRUB_ENABLE_CRYPTODISK=y

# Set to 'countdown' or 'menu' to change timeout behavior,
# press ESC key to display menu.
GRUB_TIMEOUT_STYLE=hidden

# Uncomment to use basic console
GRUB_TERMINAL_INPUT=console

# Uncomment to disable graphical terminal
#GRUB_TERMINAL_OUTPUT=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command 'videoinfo'
GRUB_GFXMODE=auto

# Uncomment to allow the kernel use the same resolution used by grub
GRUB_GFXPAYLOAD_LINUX=keep

# Uncomment if you want GRUB to pass to the Linux kernel the old parameter
# format "root=/dev/xxx" instead of "root=/dev/disk/by-uuid/xxx"
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
GRUB_DISABLE_RECOVERY=true

# Uncomment and set to the desired menu colors.  Used by normal and wallpaper
# modes only.  Entries specified as foreground/background.
GRUB_COLOR_NORMAL="light-gray/black"
GRUB_COLOR_HIGHLIGHT="green/black"

# Uncomment one of them for the gfx desired, a image background or a gfxtheme
#GRUB_BACKGROUND="/usr/share/grub/background.png"
GRUB_THEME="/usr/share/grub/themes/manjaro/theme.txt"

# Uncomment to get a beep at GRUB start
#GRUB_INIT_TUNE="480 440 1"

# Uncomment to make GRUB remember the last selection. This requires
# setting 'GRUB_DEFAULT=saved' above.
GRUB_SAVEDEFAULT=true

# Uncomment to disable submenus in boot menu
#GRUB_DISABLE_SUBMENU=y

# Uncomment this option to enable os-prober execution in the grub-mkconfig command
GRUB_DISABLE_OS_PROBER=false
7

:wink:

8

What do you mean?

The output is expected - there is nothing wrong with it.

update-grub is a wrapper script which executes

grub-mkconfig -o /boot/grub/grub.cfg

I am thinking - did you expect the menu to show up ?

For that to happen you will need to change as well

# Set to 'countdown' or 'menu' to change timeout behavior,
# press ESC key to display menu.
GRUB_TIMEOUT_STYLE=hidden

Change to menu - rebuild grub config and reboot.

1 Like
9

My timeout is still 5 seconds not 2
Question is why?

10

I don’t know why this would happen, but there might be something to try with this. AFAIK Manjaro installations lately ship with the install-grub package. Check if it is installed by tunning:

pamac search --installed install-grub

If nothing listed, install it with:

pamac  install install-grub

You can then use that to make sure your GRUB is in sync with your configuration by running:

sudo install-grub

Don’t know if it will, but I hope it helps!

11

Then your configuration has not been updated.

You can see for yourself what update-grub does

cat /usr/bin/update-grub

The output you posted initially - tells us that your configuration updated succesfully - so if your /etc/default/grub contains a timeout of 2 the same will be true for the generated grub.cfg file.

I am speculating if you have more than one grub installation and the one you boot is from another Linux

You could also check the content of grub.cfg - just about line 104 the timeout is applied. You can only read the file as root - and you can use sed to extract the lines of interest - with a default Manjaro grub.cfg it is line 104 to 112

sed '104,112!d' /boot/grub/grub.cfg

The timeout should be matching what you have set in /etc/default/grub.

If that is the case - you may have a second grub, which is the loading the system - but it is not configured by the Manjaro system installation.

1 Like
12

Sorry, my fault, timeout is 2 seconds it just a pause after timeout finished make me feel like nothing changed

13

Pausing for a second or 2 after countdown could be an artefact from the video, the systems loads in background but does not redraw the screen yet. You can see what is happening in realtime if you remove quiet and splash flom the linux default line, although it may not fix it completely.

If the countdown does not start at all unless you hit a key it is a rear bug, i managed to trigger it with using nonenglish keyboard layout for grub but i doubt it is your case.

2 Likes
14

Nothing, except maybe not providing the full output, including the command used. :wink:

The warnings are just that, warnings, and they can usually be ignored; if you see error, then that’s another story.

This is only informational.

This is common with some systems that might not recognise a type of disk – in this case, an NVMe type – the device still works nonetheless.

Regards.

1 Like
15

Those messages can be completely ignored. They only occur if you have the memtest86+ &/or memtest86+-efi packages installed. If you don’t want to see those warning messages whenever grub updates, you can safely remove those 2 packages from your system:

pamac remove memtest86+ memtest86+-efi

or

sudo pacman -Rns memtest86+ memtest86+-efi
1 Like
16

Remove the package grub-btrfs as you’re not using BTRFS.

Remove the memtest packages if you don’t use Memtest.

2 Likes
17

Thanks everyone for help, it looks like everything works it just because of pause after timeout I decided that something wrong…

18